Anyone know the address? The Ball Square Auto Repair next door is 664 Boston Ave. and looks to be part of the same building. Very curiously, the assessor's database (http://data.visionappraisal.com/somervillema/findpid.asp?iTable=pid&pid=275) lists it as vacant land worth $35k, while clearly showing a picture of the auto shop/bowling alley. Of course, there's no ownership data.

There are no other addresses near it on Boston Ave. in Somerville, and the highest Boston Ave. address in Medford (according to the Medford Assessor) is 646 (Sako's auto body), so this must be the right place. An assessor's database error or a rat, I'm not sure which.